Compare StocksCSGP vs GOOGL

CoStar Group, Inc. (CSGP) vs Alphabet Inc. (GOOGL)

CSGP
CoStar Group, Inc.
$34.72
VS
GOOGL
Alphabet Inc.
$385.69

Rewards

CSGP
  • Gross margin of 78.6% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
  • 4 insider purchases totaling $3.5M with no sells in the past 3 months — insiders are putting their own money in.
  • Trailing P/E of 496.0x is 47% below the historical average of 937.7x — potentially undervalued relative to its own history.
GOOGL
  • Alphabet Inc. has maintained ROIC above 15% for 4 consecutive years, indicating a durable competitive advantage.
  • Gross margin of 60.4% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
  • Alphabet Inc. scores 89/100 on the Economic Moat Score (Wide Moat), with roic consistency as the strongest competitive dimension.

Risks

CSGP
  • ROIC has declined by 5.1 percentage points over the observed period, which may signal competitive erosion.
  • FCF yield of 1.4% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
  • Free cash flow has declined at a 52.6% CAGR over the past 4 years — a concerning trend.
GOOGL
  • FCF yield of 1.6% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.

Key Valuation Metrics

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CSGP
GOOGL
Valuation
$202.20M
Free Cash Flow
$73.27B
1.43%
FCF Yield
1.57%
496.00
Trailing P/E
29.42
19.55
Forward P/E
27.06
Quality & Moat
0.10%
ROIC
20.98%
0.09%
ROE
27.61%
78.63%
Gross Margin
60.37%
0.15
PEG Ratio
0.36
Balance Sheet Safety
0.15
Debt / Equity
0.20
N/A
Interest Coverage
N/A
-0.22
Net Debt / EBITDA
-0.19
N/A
Dividend Yield
0.22%
CSGP: 5Ties: 1GOOGL: 5
CSGPGOOGL

Historical Fundamentals

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CSGP

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

GOOGL

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

$1 Retained Earnings Test

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CSGP
$-6.39
created per $1 retained over 3 years
Market Cap Declined
Σ Retained
$521.0M
Δ Market Cap
$-3.33B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
GOOGL
$9.18
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$288.67B
Δ Market Cap
+$2.65T
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Discounted Cash Flow (DCF) Analysis

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CSGP
2392.1% Overvalued
Price is 2392.1% above estimated fair value
Current Price: $34.72
Fair Value: $1.39
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
GOOGL
241.8% Overvalued
Price is 241.8% above estimated fair value
Current Price: $385.69
Fair Value: $112.84
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

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CSGP

What growth rate is the market pricing in at $35?

+60.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +24.8%

The market implies +60.0% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +24.8%, reflecting heavy growth investment.

GOOGL

What growth rate is the market pricing in at $386?

+23.5%
Market-Implied FCF Growth Rate

Market pricing in significantly higher growth than history — aggressive.

Economic Moat Score

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CSGP
37/100
No Moat
70+ Wide · 40-69 Narrow · <40 None

No durable moat detected, though revenue predictability shows some competitive positioning. The business lacks consistent evidence of sustainable advantages.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 5 years of fundamental data.
GOOGL
89/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None

Wide moat driven primarily by roic consistency. Reinvestment Efficiency is the area most vulnerable to competitive pressure.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.

Forensic Accounting

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CSGP
-2.07
Possible Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
GOOGL
-2.92
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Ownership Breakdown

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CSGP
Insiders 1.2%Institutions 109.1%
No. of Institutional Holders1,183
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
GOOGL
Insiders 0.6%Institutions 80.8%Retail & Other 18.6%
No. of Institutional Holders7,168
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.

High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.

Insider Buying Activity

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CSGP
4
Buys (3M)
4
Buys (12M)
Total value (12M): $3.48M
SAMS LOUISE S.
Director
$48,360
@ $48.36 · 2026-03-06
SAINT FREDERICK G
Officer
$906,600
@ $45.33 · 2026-03-02
GLASER RACHEL C
Director
$44,940
@ $44.94 · 2026-03-02
FLORANCE ANDREW COLDEN
Chief Executive Officer
$2.48M
@ $44.52 · 2026-02-27
FLORANCE ANDREW COLDEN
Chief Executive Officer
$1.10M
@ $74.67 · 2024-10-25
Open market purchases · includes direct & indirect ownership · excludes option exercises
GOOGL
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises

Open market purchases · includes direct & indirect ownership · excludes option exercises.

Insider Selling Activity

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CSGP
0
Sells (3M)
6
Sells (12M)
Total value (12M): $7.09M
HILL JOHN W
Director
$154,530
@ $68.68 · 2025-11-13
CANN CYNTHIA CAMMETT
Officer
$126,642
@ $68.79 · 2025-11-13
SAINT FREDERICK G
Officer
$2.26M
@ $90.33 · 2025-08-28
CANN CYNTHIA CAMMETT
Officer
$188,764
@ $92.85 · 2025-07-28
SAINT FREDERICK G
Officer
$2.33M
@ $93.23 · 2025-07-28
SAINT FREDERICK G
Officer
$2.03M
@ $81.10 · 2025-06-11
CANN CYNTHIA CAMMETT
Officer
$334,259
@ $78.48 · 2025-03-10
HILL JOHN W
Director
$209,939
@ $76.76 · 2024-12-10
NASSETTA CHRISTOPHER J
Director
$135,136
@ $80.39 · 2024-11-27
DESMARAIS MICHAEL J
Officer
$439,340
@ $79.88 · 2024-11-26
KLEIN MICHAEL R
Director
$5.35M
@ $74.69 · 2024-10-25
HILL JOHN W
Director
$103,562
@ $78.16 · 2024-07-30
SAINT FREDERICK G
Officer
$221,075
@ $88.43 · 2024-05-16
RUGGLES LISA C.
Officer
$1.82M
@ $91.15 · 2024-05-09
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
GOOGL
0
Sells (3M)
0
Sells (12M)
No open market insider sales found.
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives

Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.

🎭 Mr. Market's Mood

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CSGP
FearGreed
😨Fear(30/100)

"Market is pessimistic — investigate whether fears are temporary or structural"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
GOOGL
FearGreed
😏Greed(73/100)

"Market is optimistic — be cautious and ensure you have a margin of safety"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

Composite sentiment score based on market signals. Inspired by Buffett’s "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

⚖️ Buffett Signal

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CSGP
Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Fear (30)
GOOGL
Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Greed (73)
View CSGP Full AnalysisView GOOGL Full Analysis